KNU-HAEDAL#1 feat: OAuthController 및 서비스 제작

src/main/java/team/haedal/gifticionfunding/auth/api/OAuthController.java

@@ -0,0 +1,28 @@
+package team.haedal.gifticionfunding.auth.api;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import team.haedal.gifticionfunding.auth.service.OAuthService;
+import team.haedal.gifticionfunding.auth.service.SecurityService;
+import team.haedal.gifticionfunding.service.user.UserService;
+
+@RestController
+@RequiredArgsConstructor
+public class OAuthController {
+    private final OAuthService oAuthService;
+    private final SecurityService securityService;
+    private final UserService userService;
+
+    @GetMapping("/oauth2")
+    public ResponseEntity<Void> socialLogin(@RequestParam("code") String code){
+        String email= oAuthService.getEmail(code);
+        return ResponseEntity
+                .status(HttpStatus.OK)
+                .build();
+    }
+
+}

src/main/java/team/haedal/gifticionfunding/auth/dto/TokenDto.java

@@ -0,0 +1,15 @@
+package team.haedal.gifticionfunding.auth.dto;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@Builder
+@RequiredArgsConstructor
+public class TokenDto {
+    private final String grantType;
+    private final String accessToken;
+    private final String refreshToken;
+    private final Long accessTokenExpiresIn;
+}

src/main/java/team/haedal/gifticionfunding/auth/service/OAuthService.java

@@ -0,0 +1,62 @@
+package team.haedal.gifticionfunding.auth.service;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.http.*;
+import org.springframework.stereotype.Service;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestTemplate;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+@PropertySource("classpath:application.yml")
+public class OAuthService {
+    @Value("${kakao.client-id}")
+    private String CLIENT_ID;
+    @Value("${kakao.redirect-uri}")
+    private String REDIRECTION_URI;
+    @Value("${kakao.token-uri}")
+    private String TOKEN_URI;
+
+    @Value("${kakao.user-info-uri}")
+    private String USER_INFO_URI;
+
+    private final RestTemplate restTemplate = new RestTemplate();
+
+
+    public String getEmail(String code) {
+        String accessToken = getAccessToken(code);
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.set("Authorization", "Bearer " + accessToken);
+        HttpEntity entity = new HttpEntity(headers);
+
+        String email = restTemplate.exchange(USER_INFO_URI,HttpMethod.GET, entity, JsonNode.class).getBody().get("email").asText();
+        return email;
+    }
+
+    public String getAccessToken(String code) {
+        MultiValueMap<String, String> params = new LinkedMultiValueMap<>();
+        params.add("grant_type", "authorization_code");
+        params.add("client_id", CLIENT_ID);
+        params.add("redirect_uri", REDIRECTION_URI);
+        params.add("code", code);
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
+
+        HttpEntity entity=new HttpEntity(params, headers);
+
+        ResponseEntity<JsonNode> responseNode=restTemplate.exchange(TOKEN_URI, HttpMethod.POST,entity,JsonNode.class);
+        JsonNode accessTokenNode=responseNode.getBody();
+        return accessTokenNode.get("access_token").asText();
+    }
+
+
+
+}

src/main/java/team/haedal/gifticionfunding/auth/service/SecurityService.java

@@ -0,0 +1,10 @@
+package team.haedal.gifticionfunding.auth.service;
+
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+@Service
+@Slf4j
+public class SecurityService {
+}

src/main/java/team/haedal/gifticionfunding/repository/user/UserJpaRepository.java

@@ -4,4 +4,5 @@
 import team.haedal.gifticionfunding.entity.user.User;
 
 public interface UserJpaRepository extends JpaRepository<User, Long> {
+    Boolean existsByEmail(String email);
 }

src/main/java/team/haedal/gifticionfunding/service/user/UserService.java

@@ -1,4 +1,7 @@
 package team.haedal.gifticionfunding.service.user;
 
+import org.springframework.stereotype.Service;
+
+@Service
 public class UserService {
 }